For the best experience, open this PDF portfolio in Acrobat X or Adobe Reader X, or later. Get Adobe Reader Now! Risk assessment for Water Pipes (RA) The risk assessment will help you chose appropriate materials for your development. If you require any help completing this form please contact Developer Services on 0330 303 0119. Section 1: Development details Development Name Innovation Park, Medway Development Address Land adjacent to Rochester Airport, Maidstone Road, Chatham Kent ME5 9SD. Grid Ref: 164727, 574332 OS Grid Reference (mid point) Developers Name Medway Council Southern Water Reference number Please provide details below of the current and historical use of the site and adjacent sites. If your supporting information has details of the current and historical site use, please reference below the relevant sections of your report. Part of the site is currently occupied by Rochester Airport (with a grassed runway) and a car park for a BAE Systems unit. The western part of the site is used as storage facilities for caravans, and Area 2 (east) is a car park. The site has previously been part of an aeroplane factory and electrical engineering works. Refer to Chapter 6 of Land QQuality Statement report. Section 2: Preliminary risk assessment Has your desk study and site walkover identified any land potentially affected by contamination? Yes If the site is potentially affected by contamination but you have not completed any intrusive site investigation please provide details below of the rationale behind the intended pipe selection. If your supporting information has details of the rationale behind the intended pipe selection, please reference below the relevant sections of your report. Section 3: Intrusive site investigation Have you completed any intrusive site investigation? Yes Have you completed any non-intrusive site investigation? Yes Please provide date(s) when the site investigation(s) was taken Feb and March 2019 5 Contaminated land Assessment guidance Section 4: Site remediation Please provide details below of any site remediation (which may include a change in site levels) already completed. N/A Has the PSRAS (Table 1) been completed using appropriate data after remediation? Remediation will not imapct pipe type Please provide details below of any site remediation and an analysis of whether this will affect your intended pipe selection. N/A Section 5: Final use of site Please provide details below of any chemicals (including fuel) to be stored on site and any other future contamination risks which may affect your intended pipe selection. If your supporting information has details of potential contamination risks which may affect your intended pipe selection, please reference below the relevant sections of your report. The future site use is not anticipated to impact potable water pipe selection. No bulk fuel storage is proposed. What water pipe materials are intended to be Barrier Pipe used on site? _______________________ If your supporting information has additional information to support your intended pipe selection please reference below the relevant sections of your report. Based on the soil data from the SI, as presented in Chapter 9 of the Land Q uality Statement, the petroleum hydrocarbon concentrations exceed the PE and PVC thresholds and therefore Barrier Pipe will be required for new potable water pipes. Section 6: Risk Assessor Name of person directing the risk assessment Matthew Larkin for water pipes Lustre Consulting Limited, Suite 1, Second Floor Risk assessor's address North, The Fitted Rigging House, The Historic Dockyard, Chatham, Kent, ME4 4TZ Date risk assessment carried out 08/01/2021 Section 7: Declaration I confirm I have completed this form and provided supporting information in accordance with UKWIR Guidance for the Selection of Water Supply Pipes to be sued in Brownfield Sites. I also confirm that if any further relevant site investigation is needed and carried out, I will be required to submit an additional Risk Assessment for Water Pipes with the relevant supporting information. I understand the failure to supply any of the required information may delay my application being processed. Name Matthew Larkin Company Lustre Consulting Limited BSc MSc MCIWEM C.WEM Contact CSci RSoBRA Date 08/01/2021 Number 01634 75770 Signature Email Address [email protected] 6 Contaminated land Assessment guidance Pipe selection risk assessment summary Testing must be undertaken on the materials in which the pipes are to be laid – whether existing ground materials, remediated materials or imported capping materials. Please use the appropriate testing data to complete the table below. Please note, if more than one pipe selection is being made, a completed Pipe Selection risk assessment summary is required for each selection. What materials have been tested to populate the table below? Existing ground materials Test group Testing PE Metal Laboratory Testing UKAS Maximum Maximum site Locations and depths where required? threshold Pipes/ Detection accredited Y/N concentration at concentration (see concentrations exceed Barrier Pass/ Fail? proposed pipeline note 3) proposed pipeline threshold Pipe depth (see note 2) Total VOC's 0.5 Pass NOT TESTED, TESTING OF DETERMINAND NOT REQU. Total BTEX & MTBE 0.1 Pass NOT TESTED, TESTING OF DETERMINAND NOT REQU. Where Total SVOCs (excluding PAHs Preliminary 2 Pass NOT TESTED, TESTING OF DETERMINAND NOT REQU. and those substances marked Risk with * Assessment EC5-EC10 aliphatic and aromatic (PRA) has 2 Pass hydrocarbons < LOD Y < LOD < LOD identified land EC10-EC16 aliphatic and potentially TP116, TP117, TP1288, 10 FAIL 350mg/kg 350mg/kg aromatic hydrocarbons affected by Y TP127, TP129, TP131, TP132, TP107, SA3, SA4 EC16-EC40 aliphatic and contamination 500 2,442mg/kg 2,442mg/kg and BH102. Depths from 0.1 aromatic hydrocarbons FAIL Y to 0.5m bgl. Phenols* (from SVOC analysis) 2 Pass > LOD Y Ethers* 0.5 Pass NOT TESTED, TESTING OF DETERMINAND NOT REQU. Nitrobenzene* 0.5 Pass NOT TESTED, TESTING OF DETERMINAND NOT REQU. Only where Ketones* 0.5 Pass NOT TESTED, TESTING OF DETERMINAND NOT REQU. identified Aldehydes* 0.5 Pass NOT TESTED, TESTING OF DETERMINAND NOT REQU. NOT TESTED, TESTING OF DETERMINAND NOT REQU. Amines Fail Pass Conductivity, (See Corrosive Pass Redox and note 1) NOT TESTED, TESTING OF DETERMINAND NOT REQU. pH Note 1 - Threshold: For wrapped steel, corrosive if pH<7 and conductivity >400µS/cm. For wrapped ductile iron corrosive if pH<5, Eh not neutral and conductivity>400µS/cm. For copper, corrosive if pH>5 or >8 and Eh positive. Note 2 - Water pipes are normally laid at 0.75-1.35m below finished ground level. Confirm pipes at level if no barrier pipe is needed. Note 3 - Also state if liquid free product is present in soil or groundwater 7 Contaminated Land Assesment Guide Developer Services STAGE 2 DETAILED UXO RISK ASSESSMENT Report Reference: DRA-19-1123 INTEGRITY • PROFESSIONALISM • KNOWLEDGE Project Centre | Innovation Centre Medway STAGE 2 DETAILED UXO RISK ASSESSMENT: Innovation Centre Medway Prepared For: Project Centre Brimstone Site Investigation 1-3 Manor Road Chatham Kent ME4 6AE Phone: 0207 117 2492 Web: www.brimstoneuxo.com REPORT REF: DRA-19-1123 | Revision: 0 Prepared by: O. Brown 16/08/2019 Reviewed by: C.Bull 16/08/2019 Release Authorised by: A. Florence 17/08/2019 Report Issue Date: 19/08/2019 This report has been prepared in line with the specific requirement of the client’s contract or commission. It should not be used by any third party without the written permission of the UXO specialist. In preparation for this report the UXO specialist has obtained information from external, third party sources. The UXO specialist cannot be accountable for the accuracy of such data but where possible will endeavour in insure that only credible sources are accessed. This report has been prepared with consideration to the site conditions at the time of report order confirmation. The UXO specialist cannot accept liability for any subsequent changes to the conditions on site which may have an effect on the UXO risk. The report has been prepared in line with the relevant CIRIA guidance and UK legislation current at the time of report order confirmation. Changes to official guidance, legislation or technical risk assessment improvements could render parts of this assessment obsolete. The report should not be relied upon in the event of any such changes. If this report is to be used at a time in excess of two years after its issue date it is recommended that Brimstone Site Investigation be contacted to carry out a review of the report. The copyright for this report remains with the UXO specialist. No part of this report may be reproduced, published or amended without written consent from the UXO specialist. Project Centre | Innovation Centre Medway EXECUTIVE SUMMARY RESULT: Brimstone Site Investigation concludes that UXO poses a LOW RISK, LOW-MODERATE RISK, MODERATE RISK and HIGH RISK to the proposed works. THE SITE: The Site (centred on National Grid Ref: TQ 74484 64452) is located approximately 2.8km south of Chatham town centre, in the Medway area of north Kent. It is bound to the east by Roman Road / Maidstone Road (A229), to the west by Rochester Road (B2097), to the north by Marconi Way, and to the south by a small residential estate fronting Maidstone Road. The Site boundary encompasses Rochester Airport and is mainly occupied by the grass landing field area, comprising two intersection grass runways. In the north, a large carpark and two large commercial buildings are situated between the runways and a small triangle of hardstanding with a narrow road provides access to this area from Roman Road. The southern section of The Site comprises aircraft hangars with smaller ancillary airport structures and a hard-surfaced apron. A caravan storage site it situated at the very southern extent with a former building footprint and the existing Innovation Centre building (with its carpark) to the east.